The short answer
Most of the time a garage door that won't open comes down to one of five things: no power reaching the opener, a tripped safety sensor, a broken spring or cable, a disconnected trolley, or a bent track. A technician checks these roughly in that order, from easiest and cheapest to most involved, because it saves a wasted trip and gets the door moving faster.
What you're actually seeing
Before the causes, it helps to know which symptom you have, because it points to a different starting place:
- Opener is silent — no hum, no light, nothing happens when you press the remote or wall button.
- Opener hums or clicks but the door doesn't move — you hear the motor trying.
- Door starts to open, then reverses or stops — it moves a few inches and quits.
- Door is dead heavy when you try to lift it manually — this one usually points away from the opener entirely.
- Remote doesn't work but the wall button does, or the reverse — this narrows things down fast.
Hold onto which of these matches your door. It'll make sense of the order below.
1. Power to the opener
This is the first thing checked because it's the fastest to rule out. A tripped breaker, a half-unplugged cord, or a GFCI outlet that's shut off will leave the opener completely dead — no light, no sound. In this part of Michigan, garage outlets and breakers take a beating from humidity and temperature swings, so a nuisance trip isn't unusual. The fix is simply resetting the breaker or outlet and confirming the opener has solid power before touching anything else.
2. Safety sensors (the photo eyes)
If the opener hums or clicks but the door won't move, or it opens a few inches on manual-close and reverses, the two small sensors near the bottom of the tracks are the next stop. These send an infrared beam across the doorway, and if that beam is blocked, misaligned, or dirty, the opener refuses to close the door (and sometimes won't run at all). Road salt spray tracked in on tires, cobwebs, or a nudged bracket from a stored bike or snow shovel are common culprits here. A technician checks for a solid, steady light on each sensor, wipes the lenses, and re-aligns them so the lights stop blinking. This is a five-minute fix when it's the problem, which is why it's checked early.
3. Manual release or vacation lock
Sometimes the issue isn't broken anything — the red emergency release cord got pulled accidentally (common if something brushed against it, like a tall item being moved past the door), or the keypad's vacation/lock mode got switched on. Both disconnect the opener from the door or disable remote entry on purpose. Reconnecting the trolley or switching off vacation mode resolves it immediately.
4. Springs and cables
If the door is dead heavy when lifted by hand, or the opener strains and groans without moving it at all, this points to a broken torsion or extension spring, or a frayed/snapped cable. Springs do the real work of lifting a door that can weigh over a hundred pounds; the opener only guides it. Cold is hard on springs — metal contracts in deep winter temperatures and becomes more brittle, which is why spring failures often cluster in the coldest stretches of the year and again during the freeze-thaw cycling of spring. A technician will check spring tension and look for a visible gap in a torsion spring, or a snapped cable wound around the drum. This isn't a DIY repair; torsion springs are under heavy tension and need the right tools and experience to replace safely.
5. Trolley and opener gear
If the opener runs but the carriage doesn't actually grab the door, the drive gear inside the opener may have stripped, or the belt/chain may have slipped off the sprocket. This produces that humming-without-moving symptom. A worn gear is a wear-and-tear part on most residential openers after years of use, and replacement means opening the unit and swapping the gear kit or, if the motor itself is failing, replacing the opener.
6. Tracks and rollers
Last on the list because it's the most visible and usually ruled out early just by looking, but worth a real check: bent track sections, rollers that have worn out or jumped the track, or physical obstructions. Winter ice buildup at the base of the tracks, packed snow, or debris from spring mud season can all stop a door partway. A bent track needs to be straightened or replaced, and cracked rollers get swapped out as part of routine maintenance before they fail completely.
When to call Clinton Township Garage Door Specialists
If you've confirmed the opener has power, the sensors are clean and aligned, and the manual release is engaged, but the door still won't move — or it's heavy, stuck, or making grinding sounds — it's time to call in a technician rather than keep testing it. A technician will diagnose and handle spring replacement safely, since broken springs are the most common no-budge cause this time of year as temperatures start dropping. We also handle garage door opener repair for stripped gears, failing motors, and sensor alignment issues that keep coming back. Trying to force a door that's fighting a broken spring or a bent track risks further damage to the opener and the door panels themselves.
If your garage door in Clinton Township, Sterling Heights, Macomb Township, or anywhere nearby won't open, give Clinton Township Garage Door Specialists a call. We'll find the actual cause and get it fixed the same visit whenever we can.